[OS X TeX] TeXShop cannot be opened

Richard M. Koch koch at uoregon.edu
Tue Jul 18 14:53:44 EDT 2017

a) Try downloading a copy from my web site:

	http://pages.uoregon.edu/koch/texshop/texshop.html <http://pages.uoregon.edu/koch/texshop/texshop.html>

b) When TeXShop first runs, it creates a folder named TeXShop in ~/Library, the user's home library folder, ofren hidden.
Sometimes this folder has incorrect permissions that don't let this folder be created. Correct the permissions

c) Ignoring your statement that this Mac is new, if this user moved material from an older machine, they might have
moved an older version of TeXShop. In that case, search for and remove all older versions.

Incidentally, within the last year I bought.a new machine and did NOT run into this problem. So look for anything
unusual, like the software insralled before MacTeX.

Dick Koch

> On Jul 18, 2017, at 11:28 AM, Murray Eisenberg <murrayeisenberg at gmail.com> wrote:
> I’m asking this for a colleague who just downloaded MacTeX-2017 to a brand new Mac that is running macOS Sierra (10.12.5).
> He writes:
>  "I successfully downloaded the MacTeX.pkg, the md5 command verified that the MacTeX.pkg  was undamaged. Unfortunately, when I tried to launch the program I rec’d  the error message: 'TeXShop  cannot be opened because of a problem. Check with the developer to make sure TeXShop works with this version of macOS’.”
> Any idea what could be wrong?
> ---
> Murray Eisenberg			murrayeisenberg at gmail.com
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